| 摘要 |
<p>To provide a mobile integrated intelligent network as basis for a pan-European universal railway communication system wherein a local control is enabled for subscribers roaming internationally, it is proposed to provide a service switching means (SSF) for this mobile integrated intelligent network with an interrogation means (24) adapted to receive at least a routable number from a service control unit (14) in accordance with a functional number supplied thereto. Further, the service switching unit (SSF) comprises an address storage unit (26; 34-1, ..., 34-n) storing an address of the service control unit (14) such that the interrogation is directed to a local service control unit (14) in the event of international roaming.</p> |
